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ATENT Fries.

HOWARD R. BURK, or BROOKLYN, NEW YORK.

COLORING KEIROSENE-OIL.

SPECIFICATION forming part of-Letters Patent No. 284,811, datedSeptember 11, 1883.

Application flied January 2, 1883. (No specimens.)

To all whom, it may concern: I

Be it known that I, HOWARD R. BURK, of Brooklyn, in the county of Kingsand Stateof New York, have invented certain new and useful Improvementsin Coloring Kerosene-Oil, of which the following is a full, clear, andexact description.

The consumers of kerosene-oil desire that oil shall have a colorpleasing to the eye, a blue or bluish color being the favorite.Kerosene-oil having this color is more salable, than the ordinary oil.

The object of myinvention is to impart to kerosene-oil a blue or bluishcolor in such a manner that the quality of the oil will not be impairedand the color will be retained and will not settle. Coloring-matter willnot combine with kerosene-oil, nor dissolve in the same, on account ofthe peculiar qualities of kerosene, and if finely-divided or powderedcoloring-matter is mixed with kerosene-oil it is only suspendedmechanically, and will settle after a certain time, and the kerosenewill lose its artificial color and resume its natural color. Besides,the mixture of finely-divided coloringmatter impairs the quality ofthekerosene-oil.

In order to avoid the above objections and to give the kerosene apermanent color, I color some solid or fluid substance very intensely,which will dissolve in or thoroughly mix with thekerosene-oil. Forinstance, any fat, grease, oil, &c., that will readily dissolve in ormix with kerosene, and will not impair the quality of the same, iscolored very intensely, and is then dissolved in or mixed with thekerosene, and imparts its color to the same in such a manner that thecolor will be permanent and the quality of the kerosene will not beimpaired. For example, salts of copper or any other analogous salts aredissolved in some oil that will readily mix with kerosene-forinstanceolive-oilandthentheintensely-colored olive-oil is mixed with thekerosene. With one quart of olive or other oil, colored as described, Ican color from two to three hundred quarts of kerosene-oil. The color isnot given to the kerosene for the purpose of givingit the color of abetter quality of oil, as all qualities of kerosene-oil can be coloredin this manner, but only for appearance, as most kerosene is burned inglass lamps, and thus can be seen, and for that reason it is desired togive the kerosene as pleasing a color' as possible.

I do not limit myself to the coloring of kerosene-oil in the mannerdescribed above, but can color any mineral oil by the above-describedmethod.

I am aware that broadly it is not new to color naphtha by introducingtherein a coloring substance unaccompanied by a vehicle or agentconducive to the intimate union of the same with the naphtha.

Having thus fully described my invention, I claim as new and desire tosecure by Letters Patent 1. The method herein described of coloringkerosene, which consists in coloring a sub stance soluble in or capableof being thoroughly mixed with kerosene, and then dissolving or mixingthe said substance or vehicle in the kerosene, as and for the purposeset forth.

2. The described vehicle for coloring kero-' sene, which consists of asubstance soluble in or capable of being thoroughly mixed with thekerosene, and of a coloring material dissolved in said substance, as andfor the purpose set forth.

HOVARD R. BURK.

